3" X 1.25" Gray Polyurethane on Polyolefin Caster Set of 4 - All Swivel Casters - 1,000 lbs Capacity Per Set

3" X 1.25" Gray Polyurethane on Polyolefin Caster Set of 4 - All Swivel Casters - 1,000 lbs Capacity Per SetGreat replacement for Dolly Cart CastersCasterHQ's 3 inch Gray Non-Marking Polyurethane Wheel comes assembled in a Swivel Caster Yoke. Our Wheel is made from a proprietary Polyurethane compound molded to a polyolefin core. These wheels are known as the Poly on Poly Wheels. Our wheels are specially engineered to withstand harsh chemical environments and are resistant to greases, blood, oils, brine, solvents, and water including wash down applications. Our Polyurethane Wheels are completely non-marking, quiet to roll, and soft to roll over obstacles and debris with ease. These Wheels come with Precision Ball Bearings which is a huge upgrade from most wheels with a plain bore. Precision Bearings help the caster roll easier and quieter while providing a very smooth ride. We've also upgraded these with small thread guards to protect the bearings from dust, debris, hair, and threads from accumulating between the axle and bearing to allow these casters and wheels a much longer lifespan than the competition. These wheels perform great on floors that contain metal shavings, gravel, dirt, and/or debris. We designed these to never flat spot which means you can leave your equipment or cart sitting on these wheels for longer periods of time and the wheel tread will remain resilient and always perform like new. These wheels are commonly seen on high-end furniture dollies, carts, dolly cart casters, food service cart casters, material handling cart casters, maintenance cart casters, stocking cart casters, clean room cart casters, computer cart casters, laboratory cart casters, medical cart casters, computer rack casters, and ma